/* Intelligent Academic Widget System */
/* Based on Cedar Design System Colors with High-Intelligence Academic Style */

:root {
  /* Cedar Design System Color Palette - Academic Adaptation */
  --academic-primary: #dee777;          /* Main accent - Theorem highlights */
  --academic-secondary: #2e3105;        /* Dark accent - Headings, text */
  --academic-dark: #b7bb7e;            /* Darker accent - Backgrounds */
  --academic-light: #fffcc0;           /* Light accent - Card backgrounds */
  --academic-bg: #fdffe9;              /* Background - Page background */
  
  /* Derived Academic Colors */
  --academic-text: #2e3105;
  --academic-text-light: #5a5d3a;
  --academic-border: rgba(46, 49, 5, 0.15);
  --academic-border-light: rgba(46, 49, 5, 0.08);
  
  /* Academic Typography */
  --academic-heading: 'Georgia', 'Times New Roman', serif;
  --academic-body: 'Helvetica Neue', Arial, sans-serif;
  --academic-mono: 'Courier New', 'Lucida Console', monospace;
  
  /* Academic Spacing */
  --academic-xs: 0.5rem;
  --academic-sm: 1rem;
  --academic-md: 2rem;
  --academic-lg: 4rem;
  --academic-xl: 8rem;
  
  /* Academic Animations */
  --academic-fast: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --academic-medium: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --academic-slow: 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Academic Shadows */
  --academic-shadow-sm: 0 2px 8px rgba(46, 49, 5, 0.08);
  --academic-shadow-md: 0 4px 16px rgba(46, 49, 5, 0.12);
  --academic-shadow-lg: 0 8px 32px rgba(46, 49, 5, 0.15);
  
  /* Academic Gradients */
  --academic-gradient: linear-gradient(135deg, var(--academic-light) 0%, var(--academic-bg) 100%);
  --academic-gradient-dark: linear-gradient(135deg, var(--academic-dark) 0%, var(--academic-secondary) 100%);
}

/* Reset & Academic Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--academic-body);
  color: var(--academic-text);
  background-color: var(--academic-bg);
  line-height: 1.7;
  letter-spacing: 0.3px;
  padding-top: 60px; /* compensate fixed academic-nav-widget */
}

/* Academic Headings */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--academic-heading);
  font-weight: 700;
  color: var(--academic-secondary);
  margin-bottom: var(--academic-sm);
  position: relative;
}

h1::after, h2::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 60px;
  height: 3px;
  background: var(--academic-primary);
  border-radius: 2px;
}

/* Academic Typography Enhancements */
.academic-lead {
  font-size: 1.25rem;
  line-height: 1.8;
  color: var(--academic-text-light);
  font-weight: 300;
  margin-bottom: var(--academic-md);
}

.academic-code {
  font-family: var(--academic-mono);
  background: rgba(222, 231, 119, 0.1);
  border: 1px solid var(--academic-border);
  border-radius: 4px;
  padding: 2px 6px;
  font-size: 0.9em;
  color: var(--academic-secondary);
}

/* WIDGET TEMPLATES */

/* 1. Theorem Widget */
.theorem-widget {
  background: var(--academic-bg);
  border-left: 5px solid var(--academic-primary);
  border-radius: 0 8px 8px 0;
  padding: var(--academic-md);
  margin: var(--academic-lg) 0;
  position: relative;
  overflow: hidden;
  box-shadow: var(--academic-shadow-sm);
  transition: all var(--academic-medium);
}

.theorem-widget::before {
  content: 'THEOREM';
  position: absolute;
  top: 0;
  right: 0;
  background: var(--academic-primary);
  color: var(--academic-secondary);
  font-weight: 700;
  font-size: 0.75rem;
  padding: 4px 12px;
  border-radius: 0 0 0 8px;
  letter-spacing: 1px;
}

.theorem-widget:hover {
  transform: translateY(-4px);
  box-shadow: var(--academic-shadow-md);
}

.theorem-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--academic-secondary);
  margin-bottom: var(--academic-sm);
  font-family: var(--academic-heading);
}

.theorem-content {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--academic-text-light);
}

.theorem-proof-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--academic-secondary);
  color: var(--academic-bg);
  border: none;
  padding: 10px 20px;
  border-radius: 4px;
  font-weight: 600;
  cursor: pointer;
  margin-top: var(--academic-sm);
  transition: all var(--academic-fast);
  font-family: var(--academic-body);
}

.theorem-proof-toggle:hover {
  background: var(--academic-primary);
  color: var(--academic-secondary);
  transform: translateY(-2px);
}

/* 2. Proof Widget */
.proof-widget {
  background: var(--academic-light);
  border: 1px solid var(--academic-border);
  border-radius: 12px;
  padding: var(--academic-md);
  margin: var(--academic-md) 0;
  position: relative;
  display: none;
  animation: proofReveal 0.6s var(--academic-medium) both;
}

.proof-widget.active {
  display: block;
}

.proof-widget::before {
  content: 'PROOF';
  position: absolute;
  top: -12px;
  left: 20px;
  background: var(--academic-light);
  color: var(--academic-secondary);
  font-weight: 700;
  font-size: 0.75rem;
  padding: 4px 12px;
  border-radius: 4px;
  letter-spacing: 1px;
  border: 1px solid var(--academic-border);
}

.proof-step {
  margin-bottom: var(--academic-sm);
  padding-left: 24px;
  position: relative;
  opacity: 0;
  transform: translateX(-20px);
  animation: proofStep 0.4s var(--academic-fast) forwards;
}

.proof-step::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--academic-primary);
  font-weight: 700;
}

.proof-step:nth-child(2) { animation-delay: 0.1s; }
.proof-step:nth-child(3) { animation-delay: 0.2s; }
.proof-step:nth-child(4) { animation-delay: 0.3s; }
.proof-step:nth-child(5) { animation-delay: 0.4s; }

/* 3. Definition Widget */
.definition-widget {
  background: linear-gradient(135deg, rgba(255, 252, 192, 0.3) 0%, rgba(253, 255, 233, 0.1) 100%);
  border: 1px solid var(--academic-border-light);
  border-radius: 12px;
  padding: var(--academic-md);
  margin: var(--academic-md) 0;
  position: relative;
  backdrop-filter: blur(10px);
  transition: all var(--academic-medium);
}

.definition-widget:hover {
  transform: translateY(-4px);
  box-shadow: var(--academic-shadow-md);
}

.definition-term {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--academic-secondary);
  margin-bottom: var(--academic-xs);
  font-family: var(--academic-heading);
}

.definition-content {
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--academic-text);
}

/* 4. Example Widget */
.example-widget {
  background: var(--academic-bg);
  border: 2px solid var(--academic-primary);
  border-radius: 12px;
  padding: var(--academic-md);
  margin: var(--academic-md) 0;
  position: relative;
  overflow: hidden;
  transition: all var(--academic-medium);
}

.example-widget::before {
  content: 'EXAMPLE';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  background: var(--academic-primary);
  color: var(--academic-secondary);
  font-weight: 700;
  font-size: 0.75rem;
  padding: 6px 0;
  text-align: center;
  letter-spacing: 1px;
}

.example-content {
  margin-top: var(--academic-md);
  padding: var(--academic-sm);
  background: rgba(222, 231, 119, 0.1);
  border-radius: 8px;
  font-family: var(--academic-mono);
  line-height: 1.8;
}

/* 5. Equation Widget */
.equation-widget {
  background: var(--academic-bg);
  border: 1px solid var(--academic-border);
  border-radius: 8px;
  padding: var(--academic-md);
  margin: var(--academic-md) 0;
  text-align: center;
  position: relative;
  font-family: var(--academic-mono);
  font-size: 1.5rem;
  color: var(--academic-secondary);
  overflow: hidden;
  transition: all var(--academic-medium);
}

.equation-widget:hover {
  background: var(--academic-light);
  transform: translateY(-4px);
  box-shadow: var(--academic-shadow-sm);
}

.equation-solution {
  display: none;
  margin-top: var(--academic-sm);
  padding-top: var(--academic-sm);
  border-top: 2px solid var(--academic-primary);
  animation: fadeInUp 0.6s var(--academic-medium) both;
}

.equation-solution.active {
  display: block;
}

/* 6. Knowledge Graph Widget */
.knowledge-graph-widget {
  background: var(--academic-gradient);
  border-radius: 16px;
  padding: var(--academic-xl);
  margin: var(--academic-xl) 0;
  position: relative;
  overflow: hidden;
  min-height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.knowledge-node {
  position: absolute;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: var(--academic-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--academic-secondary);
  font-weight: 700;
  font-size: 1.1rem;
  text-align: center;
  padding: 10px;
  cursor: pointer;
  transition: all var(--academic-medium);
  box-shadow: var(--academic-shadow-md);
}

.knowledge-node:hover {
  transform: scale(1.1);
  box-shadow: var(--academic-shadow-lg);
}

.knowledge-connection {
  position: absolute;
  background: var(--academic-secondary);
  opacity: 0.3;
  transform-origin: 0 0;
}

/* 7. Research Paper Widget */
.research-widget {
  background: var(--academic-bg);
  border: 1px solid var(--academic-border);
  border-radius: 8px;
  padding: var(--academic-lg);
  margin: var(--academic-md) 0;
  position: relative;
  transition: all var(--academic-medium);
}

.research-widget:hover {
  transform: translateY(-6px);
  box-shadow: var(--academic-shadow-lg);
}

.research-header {
  border-bottom: 2px solid var(--academic-primary);
  padding-bottom: var(--academic-sm);
  margin-bottom: var(--academic-md);
}

.research-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--academic-secondary);
  margin-bottom: var(--academic-xs);
}

.research-authors {
  color: var(--academic-text-light);
  font-size: 1rem;
  margin-bottom: var(--academic-xs);
}

.research-abstract {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--academic-text);
  margin-bottom: var(--academic-md);
}

.research-metrics {
  display: flex;
  gap: var(--academic-lg);
  padding-top: var(--academic-sm);
  border-top: 1px solid var(--academic-border-light);
}

.metric-item {
  text-align: center;
}

.metric-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--academic-primary);
}

.metric-label {
  font-size: 0.875rem;
  color: var(--academic-text-light);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* 8. Academic Navigation Widget */
.academic-nav-widget {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(253, 255, 233, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--academic-border);
  transition: all var(--academic-medium);
}

.academic-nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--academic-sm) var(--academic-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.academic-nav-logo {
  font-family: var(--academic-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--academic-secondary);
  text-decoration: none;
  position: relative;
}

.academic-nav-logo::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--academic-primary);
  transform: scaleX(0);
  transition: transform var(--academic-medium);
}

.academic-nav-logo:hover::after {
  transform: scaleX(1);
}

.academic-nav-menu {
  display: flex;
  gap: var(--academic-lg);
  list-style: none;
}

.academic-nav-link {
  color: var(--academic-text-light);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  position: relative;
  padding: var(--academic-xs) 0;
  transition: color var(--academic-fast);
}

.academic-nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--academic-primary);
  transition: width var(--academic-medium);
}

.academic-nav-link:hover {
  color: var(--academic-secondary);
}

.academic-nav-link:hover::after {
  width: 100%;
}

/* 9. Citation Widget */
.citation-widget {
  background: rgba(255, 252, 192, 0.2);
  border-left: 4px solid var(--academic-dark);
  border-radius: 0 8px 8px 0;
  padding: var(--academic-md);
  margin: var(--academic-md) 0;
  position: relative;
  transition: all var(--academic-medium);
}

.citation-widget:hover {
  background: rgba(255, 252, 192, 0.3);
  transform: translateX(4px);
}

.citation-author {
  font-weight: 700;
  color: var(--academic-secondary);
  margin-bottom: var(--academic-xs);
}

.citation-title {
  font-style: italic;
  color: var(--academic-text);
  margin-bottom: var(--academic-xs);
}

.citation-journal {
  color: var(--academic-text-light);
  font-size: 0.9rem;
}

/* 10. Interactive Quiz Widget */
.quiz-widget {
  background: var(--academic-gradient);
  border-radius: 16px;
  padding: var(--academic-xl);
  margin: var(--academic-xl) 0;
  position: relative;
  overflow: hidden;
}

.quiz-question {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--academic-secondary);
  margin-bottom: var(--academic-lg);
  text-align: center;
}

.quiz-options {
  display: grid;
  gap: var(--academic-sm);
  margin-bottom: var(--academic-lg);
}

.quiz-option {
  background: var(--academic-bg);
  border: 2px solid var(--academic-border);
  border-radius: 8px;
  padding: var(--academic-md);
  cursor: pointer;
  transition: all var(--academic-fast);
  font-weight: 500;
}

.quiz-option:hover {
  background: var(--academic-light);
  transform: translateY(-2px);
  box-shadow: var(--academic-shadow-sm);
}

.quiz-option.selected {
  background: var(--academic-primary);
  border-color: var(--academic-primary);
  color: var(--academic-secondary);
}

.quiz-feedback {
  text-align: center;
  padding: var(--academic-md);
  border-radius: 8px;
  margin-top: var(--academic-md);
  animation: fadeIn 0.6s var(--academic-medium) both;
  display: none;
}

.quiz-feedback.correct {
  background: rgba(222, 231, 119, 0.3);
  border: 2px solid var(--academic-primary);
  color: var(--academic-secondary);
  display: block;
}

.quiz-feedback.incorrect {
  background: rgba(255, 99, 99, 0.1);
  border: 2px solid #ff6363;
  color: #ff6363;
  display: block;
}

/* ANIMATION KEYFRAMES */

@keyframes proofReveal {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes proofStep {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes knowledgeBloom {
  0% {
    transform: scale(0);
    opacity: 0;
  }
  50% {
    opacity: 0.5;
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes academicPulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.8;
    transform: scale(0.98);
  }
}

/* Utility Classes */
.academic-fade-in-up {
  animation: fadeInUp 0.8s var(--academic-medium) both;
}

.academic-fade-in {
  animation: fadeIn 0.6s var(--academic-slow) both;
}

.academic-pulse {
  animation: academicPulse 2s infinite;
}

.academic-delay-100 { animation-delay: 0.1s; }
.academic-delay-200 { animation-delay: 0.2s; }
.academic-delay-300 { animation-delay: 0.3s; }
.academic-delay-500 { animation-delay: 0.5s; }
.academic-delay-700 { animation-delay: 0.7s; }

/* Academic Button Widget */
.academic-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  cursor: pointer;
  border: none;
  font-family: var(--academic-body);
  transition: all var(--academic-medium);
  letter-spacing: 0.5px;
}

.academic-button-primary {
  background: var(--academic-primary);
  color: var(--academic-secondary);
}

.academic-button-primary:hover {
  background: var(--academic-secondary);
  color: var(--academic-bg);
  transform: translateY(-3px);
  box-shadow: var(--academic-shadow-md);
}

.academic-button-secondary {
  background: var(--academic-secondary);
  color: var(--academic-bg);
}

.academic-button-secondary:hover {
  background: var(--academic-primary);
  color: var(--academic-secondary);
  transform: translateY(-3px);
  box-shadow: var(--academic-shadow-md);
}

/* Academic Card Widget */
.academic-card {
  background: var(--academic-bg);
  border: 1px solid var(--academic-border);
  border-radius: 12px;
  padding: var(--academic-lg);
  transition: all var(--academic-medium);
  position: relative;
  overflow: hidden;
}

.academic-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--academic-shadow-lg);
}

.academic-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--academic-primary), var(--academic-light));
  opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 768px) {
  .mobile-nav-toggle {
    display: none;
  }

  .academic-nav-container {
    flex-direction: row;
    align-items: center;
    padding: 0.4rem 0.75rem;
    gap: 0.5rem;
    overflow: hidden;
  }

  .academic-nav-logo {
    font-size: 0;
    flex-shrink: 0;
  }

  .academic-nav-logo i {
    font-size: 1.2rem;
  }

  .academic-nav-menu {
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    gap: 0.5rem;
    padding: 0;
    flex: 1;
    min-width: 0;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .academic-nav-menu::-webkit-scrollbar {
    display: none;
  }

  .academic-nav-menu li {
    flex-shrink: 0;
  }

  .academic-nav-menu .academic-nav-link {
    white-space: nowrap;
    font-size: 0.78rem;
    padding: 0.2rem 0.5rem;
    background: rgba(46,49,5,0.07);
    border-radius: 4px;
  }
  
  .knowledge-graph-widget {
    min-height: 300px;
    padding: var(--academic-md);
  }
  
  .knowledge-node {
    width: 80px;
    height: 80px;
    font-size: 0.9rem;
  }
}

/* Print Styles */
@media print {
  .academic-nav-widget,
  .quiz-widget,
  .knowledge-graph-widget {
    display: none;
  }
  
  .theorem-widget,
  .definition-widget,
  .example-widget,
  .research-widget {
    break-inside: avoid;
  }
  
  body {
    color: #000;
    background: #fff;
  }
}